Art of manufacturing nitro compounds.



UNITED STATES GEORGE E. IPO'I'TS, OF SHORT HILLS, NEW COMPANY, OF NEW YORK, N. Y.,

JERSEY, ASIGNOB TO 'I HE POTTS POWDER A CORPORATION OF NE JERSEY.

ART OF MANUFACTURING NITBO COMPOUNDS.

Specification of Letters Patent. Patent ed Nov. 14, 1911.

No Drawing. Application filed. July 13, 1911. Serial No. 638,316. To all whom it may concern: acid so far as convenie ntly practicable and Be it kllOWll that I, GEORGE E. POTTS, rethen with a dilute. sol itionof ferrous-sul cently of Reynolds, Pennsylvania, and now fate, for example, one I art by Weight of fer- 40 of Short Hills, New Jersey, have invented roussulfate dissolved in one hundred times 5 certain new and useful Improvements in the the weight of water, w: llCh will be suflicient Art of Manufacturing Nit-r0 Compounds, of to wash one hundred pounds of nitro comwhich the following is a description. pounds. After running off the excessfer- The invention so far has been most useful rous-sulfate solution, tl |e nitro compound is in connection with the manufacture of nitroagain Washed with wai er, and, finally, with 10 glycerin, gun cotton, pyroxylin,nitro-cellua solution of an alka ii, for example, one lose, xylonite and smokeless powder, but it pound of carbonate of soda dissolved in one will be readily seen that it is equally applihundred ounds of wa ter for each hundred cable to the manufacture of many other nipounds 0 thecompoul .d to bewashed. i tro compounds (meaning compounds with What I claim and d sire to secure in this 15 N0 r process is the following: 1

After nitrating cellulose, glycerin, etc., it 1. Improvement in he art of manufacturis frequently very diflicult to completely ing a nitro compoun l, which consists in purify the nitrocompounds to a satis actory washing it w1th "Water, then washing it with degree, for example, to make them sufiia solution of ferrou: sulfate, then again .20 ciently stable to pass what is enerally washin it with water, and with a solution known as the English Government eat test, of an a kali. i which requires that the material shall be- 2.;Improvement inihe art of manufacturheated for a period ranging from ten to fifing a nitro compound, which consists in .the 0 teen minutes to a temperature of 160 degrees step of washing it witl a solution of-ferrous- 25 Fahrenheit, and that under these conditions sulfate. a piece-ofipaper moistened with a prescribed 3. Improvement in i he art of manufacturso ution o potassium iodid and starch shall ing a nitro compound which consists-in the exhibit a color e ual to the prescribed standstep of washing it wi h a solution of a fer- 5 r ard color in not ess thamten or fifteen minrous salt, substantiall as set forth. a utes, or other prescribed time. I have dis- .In' testimony where of I have signed this covered that these nitro compounds will specification in the pr :sence of two subscribsianld a test for lorlrger pilariods off time ing witnesses. d i t ey are was e wit a so ution 0 errous salt, such as ferrous sulfate, or similar G] E POTTS' 8 ferrous salt,for example, chlorid or nitrate, Witnesses:

r the thorou h washing being accomplished F. E. Gmswon by first was ing with water to remove excess- Gno. W. BAN]! s. 

